public class Test {

   public static void main(String args[]) {

       CPU cpu = new CPU();

       HardDisk HD=new HardDisk();

       cpu.setSpeed(2200);

       HD.setAmount(200);

       PC pc =new PC();

       pc.setCPU(cpu);

       pc.setHardDisk(HD);

       pc.show();

    }

}
